Maintech 0 Posted October 4, 2014 Report Share Posted October 4, 2014 Has anyone here had any experience with the ProMag 30 rounders? I just picked up one from CSS and I think I have a problem. It fits too loose in the gun. This is a new S410 no mods and less than 100 rnds fired. The drum slides in and the mag latch closes fully, but the drum rocks around like it's about ready to fall out (might under recoil, haven't tried to fire the gun using it yet). Anyone? Thanks Quote Link to post Share on other sites
JESS1344 508 Posted October 4, 2014 Report Share Posted October 4, 2014 MAINTECH, DID YOU BUY THE GUN NEW? HAVE YOU MADE ANY MODS TO THE MAGWELL/LATCH? DO ANY BOX MAGS FIT AS SLOPPILY? DID YOU DO ANY "FITTING" TO THE DRUM? ONLY PROBLEM I HAD WITH MINE, THE SPRING WAS APPARENTLY SET TOO TIGHT. I LOADED IT UP AND LET IT SET FOR A MONTH, FOR THE SPRING TO TAKE A "SET". THAT AND A LITTLE RE-PROFILING AND POLISHING OF THE UNDERSIDE OF THE BOLT/CARRIER, WHERE IT INTERACTS WITH THE TOP ROUND IN THE DRUM, AND IT WAS FINE. JESS1344 Quote Link to post Share on other sites
Maintech 0 Posted October 4, 2014 Author Report Share Posted October 4, 2014 MAINTECH, DID YOU BUY THE GUN NEW? Yes, the gun is new, I bought it from Centerfire Systems less than a month ago. HAVE YOU MADE ANY MODS TO THE MAGWELL/LATCH? No mods of any kind to any part of the gun. DO ANY BOX MAGS FIT AS SLOPPILY? Nope, I have the stock 4 round and two 10 round SGMs and all three are snug fitting. DID YOU DO ANY "FITTING" TO THE DRUM? No fitting, filing, or fiddiling at all, it snaps into the mag well with no effort at all. The mag latch closes fully, but does not contact the rear catch on the drum. I haven't measured the gap between the mag latch and the catch on the rear of the drum, but it looks like .30 to .40 clearence. Shouldn't this be a snug fit? ONLY PROBLEM I HAD WITH MINE, THE SPRING WAS APPARENTLY SET TOO TIGHT. That may be an issue as well, I've tried pushing down on the follower with a finger and it seems tight, but I haven't tried to load it yet. I LOADED IT UP AND LET IT SET FOR A MONTH, FOR THE SPRING TO TAKE A "SET". THAT AND A LITTLE RE-PROFILING AND POLISHING OF THE UNDERSIDE OF THE BOLT/CARRIER, WHERE IT INTERACTS WITH THE TOP ROUND IN THE DRUM, AND IT WAS FINE. JESS1344 I bought some 20 rnd MD Arms drums for my S-12 and they all required fitting, so I was expecting the 4.10 drum to need a little massaging to make it fit, but never expected it to be loose. Even the side to side movement has me thinking about adding a strip of stainless steel tape to each side of the drum's contact area with the mag well to tighten up the slop in that direction. Quote Link to post Share on other sites
JESS1344 508 Posted October 4, 2014 Report Share Posted October 4, 2014 MAINTECH, DID YOU BUY THE GUN NEW? Yes, the gun is new, I bought it from Centerfire Systems less than a month ago. HAVE YOU MADE ANY MODS TO THE MAGWELL/LATCH? No mods of any kind to any part of the gun. DO ANY BOX MAGS FIT AS SLOPPILY? Nope, I have the stock 4 round and two 10 round SGMs and all three are snug fitting. DID YOU DO ANY "FITTING" TO THE DRUM? No fitting, filing, or fiddiling at all, it snaps into the mag well with no effort at all. The mag latch closes fully, but does not contact the rear catch on the drum. I haven't measured the gap between the mag latch and the catch on the rear of the drum, but it looks like .30 to .40 clearence. Shouldn't this be a snug fit? ONLY PROBLEM I HAD WITH MINE, THE SPRING WAS APPARENTLY SET TOO TIGHT. That may be an issue as well, I've tried pushing down on the follower with a finger and it seems tight, but I haven't tried to load it yet. I LOADED IT UP AND LET IT SET FOR A MONTH, FOR THE SPRING TO TAKE A "SET". THAT AND A LITTLE RE-PROFILING AND POLISHING OF THE UNDERSIDE OF THE BOLT/CARRIER, WHERE IT INTERACTS WITH THE TOP ROUND IN THE DRUM, AND IT WAS FINE. JESS1344 I bought some 20 rnd MD Arms drums for my S-12 and they all required fitting, so I was expecting the 4.10 drum to need a little massaging to make it fit, but never expected it to be loose. Even the side to side movement has me thinking about adding a strip of stainless steel tape to each side of the drum's contact area with the mag well to tighten up the slop in that direction. MAINTECH, IF YOU'RE THE ORIGINAL PURCHASER OF BOTH THE GUN, AND THE DRUM, AND YOU HAVEN'T DIDDLED THE MAGWELL, MAG RELEASE, OR DRUM, AND BOX MAGS FIT WELL, I'D CONTACT PRO-MAG, WITH A VIEW TOWARDS RETURNING IT. IF PERCHANCE, THEY SHOULD SAY THAT THERE WAS A PRODUCTION RUN THAT WAS OFF-SPEC, THAT WOULD BE SOMETHING TO REPORT BACK HERE WITH. JESS1344 Quote Link to post Share on other sites
Maintech 0 Posted October 5, 2014 Author Report Share Posted October 5, 2014 MAINTECH, IF YOU'RE THE ORIGINAL PURCHASER OF BOTH THE GUN, AND THE DRUM, AND YOU HAVEN'T DIDDLED THE MAGWELL, MAG RELEASE, OR DRUM, AND BOX MAGS FIT WELL, I'D CONTACT PRO-MAG, WITH A VIEW TOWARDS RETURNING IT. IF PERCHANCE, THEY SHOULD SAY THAT THERE WAS A PRODUCTION RUN THAT WAS OFF-SPEC, THAT WOULD BE SOMETHING TO REPORT BACK HERE WITH. JESS1344 Yep, all new stuff right out of the box. I sent e-mail to Pro-mag's tech support late Friday evening, and I'm waiting for a response. Damn, I hate getting something NEW and having to send it back. Soon as they get back with me, I'll post an update here. Thanks for your help. Quote Link to post Share on other sites
Lambert58 22 Posted October 9, 2014 Report Share Posted October 9, 2014 My Promag drum has wobble from side to side but functions fine. It also runs alot of 2.5" shells. You can epoxy shims to the sides to get rid of the wobble. Quote Link to post Share on other sites
Maintech 0 Posted October 19, 2014 Author Report Share Posted October 19, 2014 I spoke to tech support at ProMag and he assured me all the mags were the same size since they were injection molded. When I told him about the SGMs fitting snugly in the mag well he didn't make much comment about it. I'm considering adding a layer of JBweld to the feed tower of the drum. If it will adhere to the drum material, I can shape it to fit. I can correct the side to side movement easily enough, but this drum has enough movement front to back that it's going to require adding material to front of the feed tower as well. I could file the stop on the mag latch to let it close tighter, but doing that will change the angle where the latch meets the catch on the back of the mag. I'm afraid it l won't allow the surfaces to "mate" and hold firmly. I won't try to use the drum until it fits better, but I have loaded it, and that little sucker is heavy. I don't want it moving around, even a little movement during recoil is going to put a lot of stress on things. I'll post more when I have time to work on it. Quote Link to post Share on other sites
JESS1344 508 Posted October 20, 2014 Report Share Posted October 20, 2014 MAINTECH, IT'S STILL UNDER WARRANTY, RIGHT? I'D JUST BOX THE THING UP, WITH A BRIEF EXPLANATION, AND SEND IT BACK TO 'EM. I'D ALSO MAKE A VERY SMALL UNOBTRUSIVE MARK ON IT SOMEWHERE TO INSURE THAT THEY DON'T JUST SEND YOU THE SAME ONE BACK. IS THERE ANYONE IN YOUR AREA THAT HAS THESE DRUMS, BY CHANCE, THAT WOULD ALLOW YOU TO TRY ONE IN YOUR GUN TO SEE IF IT FITS DIFFERENTLY? JESS1344 Quote Link to post Share on other sites
Lambert58 22 Posted October 21, 2014 Report Share Posted October 21, 2014 They will fit differently in different shotguns.Just like buying Ak rifles. Some mags fit tighter than others. If it functions shim it to decrease the wobble. Quote Link to post Share on other sites
Lambert58 22 Posted October 21, 2014 Report Share Posted October 21, 2014 Post some measurements of magwell and drum. Quote Link to post Share on other sites
Maintech 0 Posted October 21, 2014 Author Report Share Posted October 21, 2014 MAINTECH, IT'S STILL UNDER WARRANTY, RIGHT? I'D JUST BOX THE THING UP, WITH A BRIEF EXPLANATION, AND SEND IT BACK TO 'EM. I'D ALSO MAKE A VERY SMALL UNOBTRUSIVE MARK ON IT SOMEWHERE TO INSURE THAT THEY DON'T JUST SEND YOU THE SAME ONE BACK. IS THERE ANYONE IN YOUR AREA THAT HAS THESE DRUMS, BY CHANCE, THAT WOULD ALLOW YOU TO TRY ONE IN YOUR GUN TO SEE IF IT FITS DIFFERENTLY? JESS1344 It's still under warranty (lifetime warranty per ProMag) When I spok to ProMag's tech support, they offered to take it back on trade for something out of their other products even though I bought if from Carolina Shooters Supply. I haven't asked CSS about a refund, since they specify no returns of drums of mags on the web site. No one around here has a Saiga of any flavor except me. Wish there was, be a big help at times like this. Post some measurements of magwell and drum. Will do, soon as I can find my caliper. Been looking for it for days.... Quote Link to post Share on other sites
Lambert58 22 Posted October 22, 2014 Report Share Posted October 22, 2014 If you cant find just use a tape. Quote Link to post Share on other sites
Lomotil 1 Posted October 28, 2014 Report Share Posted October 28, 2014 We have a .410 Saiga with the Promag 30-rd drum at the shop right now, and it is loose as a Kardashian coochie. Even with a Slide-Fire Saiga stock, it works relatively well, but a shim makes a world of difference when put between the receiver and front gap of the magwell. The drum still wobbles to either side, which I really don't like, and a fix for that will no doubt be my next endeavor on this particular setup. 1 Quote Link to post Share on other sites
JESS1344 508 Posted October 28, 2014 Report Share Posted October 28, 2014 We have a .410 Saiga with the Promag 30-rd drum at the shop right now, and it is loose as a Kardashian coochie. Even with a Slide-Fire Saiga stock, it works relatively well, but a shim makes a world of difference when put between the receiver and front gap of the magwell. The drum still wobbles to either side, which I really don't like, and a fix for that will no doubt be my next endeavor on this particular setup. GUYS, I ALMOST FELL OUT OF MY FRIGGIN' CHAIR.......... I KEEP THINKING ABOUT THAT "FLOFP-FLOFP-FLOFP-FLOFP-FLOFP" SOUND THAT A FLAT TIRE MAKES. JESS1344 1 Quote Link to post Share on other sites
Lomotil 1 Posted November 3, 2014 Report Share Posted November 3, 2014 We have a .410 Saiga with the Promag 30-rd drum at the shop right now, and it is loose as a Kardashian coochie. Even with a Slide-Fire Saiga stock, it works relatively well, but a shim makes a world of difference when put between the receiver and front gap of the magwell. The drum still wobbles to either side, which I really don't like, and a fix for that will no doubt be my next endeavor on this particular setup. GUYS, I ALMOST FELL OUT OF MY FRIGGIN' CHAIR.......... I KEEP THINKING ABOUT THAT "FLOFP-FLOFP-FLOFP-FLOFP-FLOFP" SOUND THAT A FLAT TIRE MAKES. JESS1344 Sorry... I have a tendency to not "sugar-coat" things... Quote Link to post Share on other sites
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